LanguagesC++

cppperf rule ids (slugs)

Canonical ids are slugs only. Numerics from the old map are historical and not accepted.

Slug
`cx-regex-ctor-hot`
`cx-endl-hot`
`cx-clock-hot`
`cx-ifstream-hot`
`cx-const-by-value`
`cx-vector-bool`

Renamed 2026-10-27 (tombstone old; never reuse)

Default --scope all (or kit-equivalent). Old *-in-loop ids misled tools/models; they are tombstoned under evidence/_removed/.

Old slug	New slug
`cx-clock-in-loop`	`cx-clock-hot`
`cx-endl-in-loop`	`cx-endl-hot`
`cx-ifstream-in-loop`	`cx-ifstream-hot`
`cx-regex-ctor-in-loop`	`cx-regex-ctor-hot`

Removed

cx-string-append-unreserved — about 1.09× at -O2; see evidence/_removed/

Removed (no slug)

CX001 — see evidence/_removed/
CX003 — see evidence/_removed/
CX004 — see evidence/_removed/

See also root rule-id-map.

C++ performance guide (v0)

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Renamed 2026-10-27 (tombstone old; never reuse)Removed Removed (no slug)